"Operation: P.O.O.L."
Season 4, Episode 43
Mission:	081
Production Code:	404
Airdate:	December 10, 2004
Credits
Writer(s):	Mo Willems Mr. Warburton
Storyboards by:	Kim Arndt Matt Peters Jesse Schmal Abigail Nesbitt
Episode Guide
Previous Mission "Operation: M.A.C.A.R.R.O.N.I."	Next Mission "Operation: C.A.K.E.D.-F.O.U.R."

Prevent Opposite Operative's Larceny

InformationEdit

Summary: Numbuh 4's new pool is actually a portal to an alternate version of the KND Universe where their counterparts know as the DNK (Destructively Nefarious Kids) are evil. The kids do all the adults job whereas the adults sit around and play video games. While swimming in the pool, Lizzie is captured by an evil opposite of herself, Eizzil Enived (Lizzie's name backwards), and Nigel follows the captor back to her home universe.

• Villain Debuts: Negative Numbuh 4
• Ally Debuts: Destructively Nefarious Kids and TLTDFCD, Daddy
• Starring:
  • Numbuh 1
  • Numbuh 2
  • Numbuh 3
  • Numbuh 4
  • Numbuh 5
  • Lizzie Devine
  • Eizzil Enived
  • Negative Numbuh 1
  • Negative Numbuh 2
  • Negative Numbuh 3
  • Negative Numbuh 4
  • Negative Numbuh 5
  • Negative Numbuh 86
  • TLTDFCD
  • Daddy
• Locations:
• Numbuh 4 house
• DNK Treehouse
• DNK Treehouse

Villain Technology:

• S.P.L.A.T.T.L.E.

TriviaEdit

• In the credits, the pool now has sand in it, and Numbuh 4 sings Buried in the Sand, making this episode the second time Numbuh 4 sings.
• First appearance of Lizzie in a swimsuit.
• This episode is somewhat based off the Star Trek episode entitled "Mirror, Mirror", where the crew of the Enterprise encounter their own evil twins. The Evil Spock had a goatee like Negative Numbuh 4's, which denotes evil twin status.
• The second episode to use the word "pool", the first was No P in the OOL.
• Everything is completely opposite of the real world, both of the organizations and the characters' personalities. For example, the KND are evil, and the DCFDTL and Father are good. Their names also seem to be reversed in spelling (Lizzie's counterpart's name is Eizzil)
• Numbuh 4 finally learns to swim in this episode. But in Operation: C.A.K.E.D.-F.O.U.R. (which happens after this) he complains he can't swim
• Numbuh 3's feelings towards Numbuh 4 is briefly shown when Negative Numbuh 3 tells Numbuh 4 that she doesn't like him. Since she's Numbuh 3's negative, Numbuh 3 must actually like Numbuh 4. Whether this is in a romantic way or not is unknown (episodes such as Operation: S.N.O.W.I.N.G. would imply it is).
• At the end of the episode, before Numbuh 1 and Lizzie leave the negative world, Numbuh 1 notices Ezzil's eyes aren't evil anymore, and flirts a bit with her. Lizzie notices and rips him away from her nega-self and throws him in the pool.
• When Negative Numbuh 4 is jumping off of the diving board to go to the positive world, it doesn't show Positive Numbuh 4 on the diving board when he was there less than 2 seconds before he jumped.